Speed up mood loading.
[paraslash.git] / afs.h
1 /*
2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 #include <regex.h>
8 #include "osl.h"
9 #include "hash.h"
10
11 /** Audio file selector data stored in the audio file table. */
12 struct afs_info {
13 /** Seconds since the epoch. */
14 uint64_t last_played;
15 /** Bit field of set attributes. */
16 uint64_t attributes;
17 /** Counts how many times the file was selected. */
18 uint32_t num_played;
19 /** Image blob associated with this file (foreign key). */
20 uint32_t image_id;
21 /** Lyrics blob associated with this file (foreign key). */
22 uint32_t lyrics_id;
23 /** Mp3, ogg or aac. */
24 uint8_t audio_format_id;
25 };
26
27 enum afs_table_flags {TBLFLAG_SKIP_CREATE};
28
29 struct table_info {
30 const struct osl_table_description *desc;
31 enum afs_table_flags flags;
32 };
33
34 enum play_mode {PLAY_MODE_MOOD, PLAY_MODE_PLAYLIST};
35
36 struct audio_file_data {
37 enum play_mode current_play_mode;
38 long score;
39 struct afs_info afsi;
40 struct audio_format_info afhi;
41 char *path;
42 struct osl_object map;
43 };
44
45 enum pattern_match_flags {
46 PM_REVERSE_LOOP = 1,
47 PM_NO_PATTERN_MATCHES_EVERYTHING = 2,
48 PM_SKIP_EMPTY_NAME = 4,
49 };
50
51 struct pattern_match_data {
52 struct osl_table *table;
53 unsigned loop_col_num;
54 unsigned match_col_num;
55 unsigned pm_flags;
56 int fnmatch_flags;
57 struct osl_object patterns;
58 void *data;
59 int (*action)(struct osl_table *table, struct osl_row *row, const char *name, void *data);
60 };
61
62 /* afs */
63 typedef int callback_function(const struct osl_object *, struct osl_object *);
64 __noreturn int afs_init(uint32_t cookie, int socket_fd);
65 int send_callback_request(callback_function *f, struct osl_object *query,
66 struct osl_object *result);
67 int send_standard_callback_request(int argc, char * const * const argv,
68 callback_function *f, struct osl_object *result);
69 int send_option_arg_callback_request(struct osl_object *options,
70 int argc, char * const * const argv, callback_function *f,
71 struct osl_object *result);
72 int stdin_command(int fd, struct osl_object *arg_obj, callback_function *f,
73 unsigned max_len, struct osl_object *result);
74 int string_compare(const struct osl_object *obj1, const struct osl_object *obj2);
75 int open_next_audio_file(struct audio_file_data *afd);
76 int close_audio_file(struct audio_file_data *afd);
77 int for_each_matching_row(struct pattern_match_data *pmd);
78
79 /* score */
80 int score_init(struct table_info *ti, const char *db);
81 void score_shutdown(enum osl_close_flags flags);
82 int admissible_file_loop(void *data, osl_rbtree_loop_func *func);
83 int admissible_file_loop_reverse(void *data, osl_rbtree_loop_func *func);
84 int score_get_best(struct osl_row **aft_row, long *score);
85 int get_score_and_aft_row(struct osl_row *score_row, long *score, struct osl_row **aft_row);
86 int score_add(const struct osl_row *row, long score);
87 int score_update(const struct osl_row *aft_row, long new_score);
88 int get_num_admissible_files(unsigned *num);
89 int score_delete(const struct osl_row *aft_row);
90 int row_belongs_to_score_table(const struct osl_row *aft_row);
91
92 /* attribute */
93 int attribute_init(struct table_info *ti, const char *db);
94 void attribute_shutdown(enum osl_close_flags flags);
95 void get_attribute_bitmap(const uint64_t *atts, char *buf); /* needed by com_ls() */
96 int get_attribute_bitnum_by_name(const char *att_name, unsigned char *bitnum);
97 int get_attribute_text(uint64_t *atts, const char *delim, char **text);
98
99 /* aft */
100 int aft_init(struct table_info *ti, const char *db);
101 void aft_shutdown(enum osl_close_flags flags);
102 int aft_get_row_of_path(char *path, struct osl_row **row);
103 int open_and_update_audio_file(struct osl_row *aft_row, struct audio_file_data *afd);
104 int load_afsi(struct afs_info *afsi, struct osl_object *obj);
105 void save_afsi(struct afs_info *afsi, struct osl_object *obj);
106 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi);
107 int get_afhi_of_row(const struct osl_row *row, struct audio_format_info *afhi);
108 int get_audio_file_path_of_row(const struct osl_row *row, char **path);
109 int get_afsi_object_of_row(const struct osl_row *row, struct osl_object *obj);
110 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func);
111 int aft_check_callback(const struct osl_object *query, struct osl_object *result);
112
113 /* mood */
114 int change_current_mood(char *mood_name);
115 void close_current_mood(void);
116 int mood_update_audio_file(const struct osl_row *aft_row, struct afs_info *old_afsi);
117 int reload_current_mood(void);
118 int mood_delete_audio_file(const struct osl_row *aft_row);
119 int mood_check_callback(__a_unused const struct osl_object *query,
120 struct osl_object *result);
121
122
123 /* playlist */
124 int playlist_open(char *name);
125 void playlist_close(void);
126 int playlist_update_audio_file(struct osl_row *aft_row);
127 int playlist_check_callback(__a_unused const struct osl_object *query,
128 struct osl_object *result);
129
130 /** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
131 #define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))
132
133
134 #define DECLARE_BLOB_SYMBOLS(table_name, cmd_prefix) \
135 int table_name ## _init(struct table_info *ti, const char *db); \
136 void table_name ## _shutdown(enum osl_close_flags flags); \
137 int cmd_prefix ## _get_name_by_id(uint32_t id, char **name); \
138 int cmd_prefix ## _get_name_and_def_by_row(const struct osl_row *row, \
139 char **name, struct osl_object *def); \
140 extern struct osl_table *table_name ## _table;
141
142 DECLARE_BLOB_SYMBOLS(lyrics, lyr);
143 DECLARE_BLOB_SYMBOLS(images, img);
144 DECLARE_BLOB_SYMBOLS(moods, mood);
145 DECLARE_BLOB_SYMBOLS(playlists, pl);
146
147 /** The columns of an abstract blob table. */
148 enum blob_table_columns {
149 /** The identifier, a positive integer that never repeats. */
150 BLOBCOL_ID,
151 /** The unique name of the blob. */
152 BLOBCOL_NAME,
153 /** The actual blob contents. */
154 BLOBCOL_DEF,
155 /** A blob table has that many columns. */
156 NUM_BLOB_COLUMNS
157 };
158
159 #define DEFINE_BLOB_TABLE_DESC(table_name) \
160 struct osl_table_description table_name ## _table_desc = { \
161 .name = #table_name, \
162 .num_columns = NUM_BLOB_COLUMNS, \
163 .flags = OSL_LARGE_TABLE, \
164 .column_descriptions = blob_cols \
165 };
166
167 #define DEFINE_BLOB_TABLE_PTR(table_name) struct osl_table *table_name ## _table;
168
169 #define INIT_BLOB_TABLE(table_name) \
170 DEFINE_BLOB_TABLE_DESC(table_name); \
171 DEFINE_BLOB_TABLE_PTR(table_name);
172